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Chapter 9 Advanced Base Field Structures and Embarkation
Erection

Builder 3&2 Volume 02 - Construction manual for building structures
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Figure  9-1.—Two  20-  by  48-foot  rigid-frame,  preengineered  buildings  erected  end  to  end. FOUNDATIONS In  addition  to  the  usual  reasons  for  stressing  the importance  of  a  square  and  level  foundation,  there  is another  reason  peculiar  to  the  erection  of  a  pre- fabricated  structure.  Prefabricated  parts  are  designed to fit together without forcing. If the foundation is even slightly out of square or not perfectly level, many of  the  parts  will  not  fit  together  as  designed. Continuously  check  the  alignment  of  the  anchor  bolts prior to, during, and after concrete is poured. PREELECTION  WORK A lot of preliminary work is necessary before the erection of a PEB can begin. After the building site is selected,  prepare  to  pour  the  foundation  and  slab. Before concrete for the foundation piers can be poured, templates for the anchor bolts are placed on the forms, and anchor bolts are inserted in the holes. The threads of the bolts are greased and nuts are placed on them to protect the threads from the concrete. After a last-minute check to ensure all forms are level and the anchor bolts are properly aligned, concrete is placed in the forms and carefully worked around the bolts so they remain vertical and true. While the foundation is being prepared, other crew- members are assigned various kinds of preliminary work. This work includes uncrating material and inven- tory, bolting up rigid-frame assemblies, assembling door  leaves,  and  glazing  windows.  When  all  prelimin- ary work is properly completed, assembly and erection of the entire building are quicker and you have fewer problems. All materials, except paneling, should be uncrated and laid out in an orderly manner so parts can be easily found. Don’t uncrate paneling until it is ready to install. When the crates are opened, don’t damage the lumber; you can use it for scaffolding, props, and sawhorses. After  the  building  foundation  has  been  prepared, and  where  practical,  building  materials  should  be placed on the building site near the place where they will be used. Girts, purlins, cave struts, and brace rods should be equally divided along each side of the foun- dation. Panels and miscellaneous parts that will not be used immediately should be placed on boards on each side  of  the  foundation  and  covered  with  tarpaulins  or 9-2







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